PM 500 White Oil | Lubriplate Lubricants Co. NSF H1 Registered Oil with Emulsifiers LUBRIPLATE PM-500 contains emulsifying agents that wet the lubricated surfaces and provide an oiliness film for moving parts. LUBRIPLATE PM-500 has been and is being used - very successfully - in pear machines and other applications where a USDA H1 authorized* white oil is required. LUBRIPLATE PM-500 is especially suited for water conditions existing in the machinery operation.